(noun, adjective, verb)


1. (used technically of a device or process) having two parts

- a duplex transaction

Similar word(s): multiple

2. allowing communication in opposite directions simultaneously

- duplex system

- duplex telephony

Similar word(s): bidirectional

Sentences with duplex as an adjective:

- duplex telegraphy


1. a house with two units sharing a common wall

Definition categories: man–made, house

2. an apartment having rooms on two floors that are connected by a staircase

Definition categories: man–made, apartment, flat


1. change into a duplex

Definition categories: change, convert